“What do you think about Desantis running as vice president to Mr. Trump?”
U.S. Constitution
That is VERY easily solved - Trump simply re-establishes residency in NY, or in NJ (he can use his Bedminster gold course for that, similar to how Bush the Elder used the Houstonian Hotel). There is precedent - Cheney rushed to Wyoming to re-establish his residency in the days leading up to the 2000 Republican Convention. When I heard that some enterprising reporter picked up on a middle-of-the-night charter flight with Cheney on board, I knew that he was going to be the Bush (the Younger) nominee.
Simple problem, easily solved.